Acoustic panel



FIG. 1 is a perspective view of the acoustic panel comprising a first part and a second part acoustic panels, showing my new design;

FIG. 2 is a perspective view of a first part of the acoustic panel as shown in FIG. 1; and,

FIG. 3 is a perspective view of a second part of the acoustic panel as shown in FIG. 1. 

CLAIM The ornamental design for an acoustic panel, as shown and described. 